h3 {
  margin-top: 18px;
  margin-bottom: 10px;
  font-size: 18px;
}
.flex-container {
  display: flex;
  flex-wrap: wrap;
}
.card {
  display: block;
  margin-right: 20px;
  margin-top: 20px;
  width: 320px;
  background-color: #fff;
  border: 1px solid #ebebeb;
  padding: 20px;
}
.card:hover {
  box-shadow: 1px 1px 4px 0px #ccc;
}
.card h3 {
  border-bottom: 1px solid #ccc;
  margin-top: 0;
  padding-bottom: 6px;
}
.describe {
  color: #777;
}
.describe img{
  float: left;
  width: 50px;
  padding: 5px 8px 0 0;
}
